Analysis

  • max time kernel
    174s
  • max time network
    182s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:57

General

  • Target

    4816749165d28f1520011745dacc4c524287d963779c1d1e0e0b4b631aa4741d.exe

  • Size

    447KB

  • MD5

    dc70099ef6077684bbc27fc0585fcf01

  • SHA1

    ac4176ff816b6b1df3261d69374290507def93f4

  • SHA256

    4816749165d28f1520011745dacc4c524287d963779c1d1e0e0b4b631aa4741d

  • SHA512

    062a4ba9e6add197963b0e8c153480ec393a344501d2fae30945c84022092e053e8c41d1c59e58d9487e4fd3f01e30e415a74683805663fe9e769c0f6ef7c6f2

  • SSDEEP

    12288:jPHyDXuJOmCBoJfBeQjhgeHgKau/CBkHUtFDT:jP9OmC25wQeWgKaYV0P3

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in System32 directory 5 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4816749165d28f1520011745dacc4c524287d963779c1d1e0e0b4b631aa4741d.exe
    "C:\Users\Admin\AppData\Local\Temp\4816749165d28f1520011745dacc4c524287d963779c1d1e0e0b4b631aa4741d.exe"
    1⤵
    • Drops file in Drivers directory
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:2672
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4360
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4040
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:8
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4956
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4756
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4712
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:4788
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1664
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:3640
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4180
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1876
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:1304
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:228

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          1
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsvFB4F.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsvFB4F.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsvFB4F.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsvFB4F.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsvFB4F.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsvFB4F.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsvFB4F.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsvFB4F.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsvFB4F.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            dd18841eb0b15acfd24f404d690d861a

            SHA1

            cbb9f546f21099b3860c3f8d206c9c4525078e55

            SHA256

            55134f7bc563e4ad069871a6887dcdb32664b985ec4db11bb740899b595d6307

            SHA512

            9dbd1e6955d48205eaa7c772273498508dfe9ca94f262ebec0631f42b50f47409680cebb95d6acc21c78efb331f8c8f38979080467e257c472ebcb7358a3be48

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            dd18841eb0b15acfd24f404d690d861a

            SHA1

            cbb9f546f21099b3860c3f8d206c9c4525078e55

            SHA256

            55134f7bc563e4ad069871a6887dcdb32664b985ec4db11bb740899b595d6307

            SHA512

            9dbd1e6955d48205eaa7c772273498508dfe9ca94f262ebec0631f42b50f47409680cebb95d6acc21c78efb331f8c8f38979080467e257c472ebcb7358a3be48

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            dd18841eb0b15acfd24f404d690d861a

            SHA1

            cbb9f546f21099b3860c3f8d206c9c4525078e55

            SHA256

            55134f7bc563e4ad069871a6887dcdb32664b985ec4db11bb740899b595d6307

            SHA512

            9dbd1e6955d48205eaa7c772273498508dfe9ca94f262ebec0631f42b50f47409680cebb95d6acc21c78efb331f8c8f38979080467e257c472ebcb7358a3be48

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            dd18841eb0b15acfd24f404d690d861a

            SHA1

            cbb9f546f21099b3860c3f8d206c9c4525078e55

            SHA256

            55134f7bc563e4ad069871a6887dcdb32664b985ec4db11bb740899b595d6307

            SHA512

            9dbd1e6955d48205eaa7c772273498508dfe9ca94f262ebec0631f42b50f47409680cebb95d6acc21c78efb331f8c8f38979080467e257c472ebcb7358a3be48

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            9251af06aaf319f1de445a1423c163ff

            SHA1

            c2620bc764e724d316447c636e912a72a374f798

            SHA256

            598fbb3e5121280fe52ee66bcca7324552223fe72cf592498be679ceeafac83f

            SHA512

            fc8a5ce6cb4d9a4e1cf3ca6e1b67ad80d7d7208f09b7a817804007a891c3d681a198c91fdc6faf82c41d8fd65ebfb0d029b6aa99968db97181c85b7f04604cd5

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            9251af06aaf319f1de445a1423c163ff

            SHA1

            c2620bc764e724d316447c636e912a72a374f798

            SHA256

            598fbb3e5121280fe52ee66bcca7324552223fe72cf592498be679ceeafac83f

            SHA512

            fc8a5ce6cb4d9a4e1cf3ca6e1b67ad80d7d7208f09b7a817804007a891c3d681a198c91fdc6faf82c41d8fd65ebfb0d029b6aa99968db97181c85b7f04604cd5

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            9251af06aaf319f1de445a1423c163ff

            SHA1

            c2620bc764e724d316447c636e912a72a374f798

            SHA256

            598fbb3e5121280fe52ee66bcca7324552223fe72cf592498be679ceeafac83f

            SHA512

            fc8a5ce6cb4d9a4e1cf3ca6e1b67ad80d7d7208f09b7a817804007a891c3d681a198c91fdc6faf82c41d8fd65ebfb0d029b6aa99968db97181c85b7f04604cd5

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            ec079f1517c770d24af40b38f7f29f45

            SHA1

            e5dbabf94ffc5953b7d658bd40b12daa7559d558

            SHA256

            88d206f5ad5c2a903821330f8bf677ddc0225385d70c669bdf52e0f0848baa61

            SHA512

            49806a72e161f122a76d92d3acfbcbfaacc803dfa7c18bc8a7989b73343cda0de8fb92ff5cc04751bf433dcbc338a9bd280d46e3cf0ea59d1ea284532b9156f2

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            ec079f1517c770d24af40b38f7f29f45

            SHA1

            e5dbabf94ffc5953b7d658bd40b12daa7559d558

            SHA256

            88d206f5ad5c2a903821330f8bf677ddc0225385d70c669bdf52e0f0848baa61

            SHA512

            49806a72e161f122a76d92d3acfbcbfaacc803dfa7c18bc8a7989b73343cda0de8fb92ff5cc04751bf433dcbc338a9bd280d46e3cf0ea59d1ea284532b9156f2

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            aab17dfb4a5c2d46ca9fc7f36ceaf802

            SHA1

            808f76a2367b596f9181cce7c9f24e0a6418c4c9

            SHA256

            4a21af28500d3e3c2ed954d433fd851c7e37f1819ca82fb623be1815dac3265e

            SHA512

            7de967a20eb702179e8985d384abe17c9c2bf85d9621ae9dfc537554860de419689ef986c7f1cc6e9924a2c92e628e447ec45524ed3c6b27a0fdbe0c808f2998

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            aab17dfb4a5c2d46ca9fc7f36ceaf802

            SHA1

            808f76a2367b596f9181cce7c9f24e0a6418c4c9

            SHA256

            4a21af28500d3e3c2ed954d433fd851c7e37f1819ca82fb623be1815dac3265e

            SHA512

            7de967a20eb702179e8985d384abe17c9c2bf85d9621ae9dfc537554860de419689ef986c7f1cc6e9924a2c92e628e447ec45524ed3c6b27a0fdbe0c808f2998

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            aab17dfb4a5c2d46ca9fc7f36ceaf802

            SHA1

            808f76a2367b596f9181cce7c9f24e0a6418c4c9

            SHA256

            4a21af28500d3e3c2ed954d433fd851c7e37f1819ca82fb623be1815dac3265e

            SHA512

            7de967a20eb702179e8985d384abe17c9c2bf85d9621ae9dfc537554860de419689ef986c7f1cc6e9924a2c92e628e447ec45524ed3c6b27a0fdbe0c808f2998

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            6905a00f82bd7b7c80c340cff894d8e9

            SHA1

            582a84585308aa07e0789ccbe02b70311ef0c33c

            SHA256

            875868bce5faeba20fdfd6d22a6d92f43d2d7f359bd93bc63eb52801478796ac

            SHA512

            45d938bdb0475803b9e687af180577f77a3a38b82ea82f600d6bb980fc7420b7fd6438ead1103ef2e31fcd6dbc3293916ed0d76c02f6fca9cc7e01eb54589513

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            6905a00f82bd7b7c80c340cff894d8e9

            SHA1

            582a84585308aa07e0789ccbe02b70311ef0c33c

            SHA256

            875868bce5faeba20fdfd6d22a6d92f43d2d7f359bd93bc63eb52801478796ac

            SHA512

            45d938bdb0475803b9e687af180577f77a3a38b82ea82f600d6bb980fc7420b7fd6438ead1103ef2e31fcd6dbc3293916ed0d76c02f6fca9cc7e01eb54589513

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            6905a00f82bd7b7c80c340cff894d8e9

            SHA1

            582a84585308aa07e0789ccbe02b70311ef0c33c

            SHA256

            875868bce5faeba20fdfd6d22a6d92f43d2d7f359bd93bc63eb52801478796ac

            SHA512

            45d938bdb0475803b9e687af180577f77a3a38b82ea82f600d6bb980fc7420b7fd6438ead1103ef2e31fcd6dbc3293916ed0d76c02f6fca9cc7e01eb54589513

          • memory/8-139-0x0000000000000000-mapping.dmp
          • memory/1664-157-0x0000000000000000-mapping.dmp
          • memory/1876-165-0x0000000000000000-mapping.dmp
          • memory/3640-158-0x0000000000000000-mapping.dmp
          • memory/4040-136-0x0000000000000000-mapping.dmp
          • memory/4180-164-0x0000000000000000-mapping.dmp
          • memory/4360-135-0x0000000000000000-mapping.dmp
          • memory/4712-146-0x0000000000000000-mapping.dmp
          • memory/4756-141-0x0000000000000000-mapping.dmp
          • memory/4788-152-0x0000000000000000-mapping.dmp
          • memory/4956-140-0x0000000000000000-mapping.dmp